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guidance document on aquatic toxicity testing of difficult substances and mixtures.
guidance document on aquatic toxicity testing of difficult substances and mixtures.

« exchange rate variability and international trade : why is it so difficult to find any empirical relationship ?'
« exchange rate variability and international trade : why is it so difficult to find any empirical relationship ?"

this may put a strain on family life in the new environment and may make solving problems « back home » more difficult .
this may put a strain on family life in the new environment and may make solving problems « back home » more difficult .

a sovereign entity, as well as a private debtor, that fails to pay back a loan will find it difficult to attract new funding in the future.
a sovereign entity, as well as a private debtor, that fails to pay back a loan will find it difficult to attract new funding in the future.

oecd (2000). guidance document on aquatic toxicity testing of difficult substances and mixtures, oecd environmental health and safety publications series on testing and assessment nr. 23.
oecd, (2000) guidance document on aquatic toxicity testing of difficult substances and mixtures, oecd environmental health and safety publications series on testing and assessment no 23.

lengvasgame difficulty level 3 out of 8
game difficulty level 3 out of 8